Oviod objet d'art with bubbles, 1980

Notes

Bubbles themselves can be natural occurrences during the blowing process or intentionally created to add unique textures and visual effects. These bubbles can also reveal information about the glass's history and the techniques used to create it. Glass artists use various techniques to control bubble formation, including manipulating the viscosity of the molten glass, controlling the rate of cooling, and even using mechanical methods to create specific bubble patterns.